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Unread 08-06-2010, 07:56 AM   #1
Tmblack3
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maximum tire size with 2" lift

i just recently added a skyjacker 2" suspension lift. what i have herd from quadratec: Skyjacker Standard 2" Spacer Lift Kit with Hydro Shocks for 97-06 Jeep® Wrangler TJ & Unlimited - Quadratec is that you can put up to 32" tires, but this doesnt make sense to me. stock size tires are 30, 15 radius. a 2" lift kit would add 2" to the maximum RADIUS, and in turn, add 4" to the maximum DIAMETER, allowing me to use up to 34" tires, correct?

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Unread 08-06-2010, 08:04 AM   #2
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I have heard/seen people using 33's with a 2in BB however there is not much travel room. I had 32's on factory wheels with approx. 2" of lift and my wheels would rub on the lower control arms at full chock left and right. Part of it depends on the backspacing of your rims. Are you on factory wheels? I wouldn't go any larger than 32's with a 2" lift IMHO
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Unread 08-06-2010, 08:34 AM   #3
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You could run 33's with proper bumpstops,but it won't leave you much room.I wouldn't take it offroad like that.Just add a 1" BL.
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Unread 08-06-2010, 08:48 AM   #4
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Quote:
Originally Posted by Tmblack3 View Post
i just recently added a skyjacker 2" suspension lift. what i have herd from quadratec: Skyjacker Standard 2" Spacer Lift Kit with Hydro Shocks for 97-06 Jeep® Wrangler TJ & Unlimited - Quadratec is that you can put up to 32" tires, but this doesnt make sense to me. stock size tires are 30, 15 radius. a 2" lift kit would add 2" to the maximum RADIUS, and in turn, add 4" to the maximum DIAMETER, allowing me to use up to 34" tires, correct?
You also have to keep in mind the area behind the tire:

You're increasing the area you have over the tire, sure...so maybe you could run a 34" diameter if that was the only clearance issue you had. However, you increase the clearance in only one direction (primarily) with the 2" lift, and the larger tire is larger in all directions. So you might have the same (or more) space from the top of the tire to the edge of your flare overhead, but you won't have a proportionally equal clearance behind the tire. That's where you'll get in trouble. Also, you have to consider what happens when the tire is turned...you might have clearance issues inside the wheel well, to boot. Thus, when the suspension cycles (compresses, in this case) you may have too large of a tire, and you may end up with it slamming into the rear portion of your fender flare or wheel well.

As an example, look at high-clearance rear fenders...you need to trim the lowest part of the forward edge of the wheel well. That's where your tire impact would be.

Short answer: 33's and bumpstops. And check your shocks.
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Unread 08-06-2010, 08:50 AM   #5
CTJeepWJ
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2 inch with 31's and no body lift
p1230382.jpg  
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Unread 08-06-2010, 08:53 AM   #6
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Quote:
Originally Posted by Tmblack3 View Post
a 2" lift kit would add 2" to the maximum RADIUS, and in turn, add 4" to the maximum DIAMETER, allowing me to use up to 34" tires, correct?
not correct at all. it doesn't matter if you have a 2" lift or 4" lift...what matters is shock length and bumpstop length. If you can compress the shocks and bumpstops to the original stock location, the radius from the wheel center to the fender hasn't changed at all. you need to think clearances at full suspension compression - aka springs are removed.

with 2" of lift, if you add 2" bumpstop extensions, you can run 33s. if you add 1" bumpstop extensions, you can run 32s. with no bumpstops, you can run 31s. a 1" BL removes the requirement for 1" of bumpstop extension.

read this: http://www.jeepforum.com/forum/f9/bu...points-734737/
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Unread 08-06-2010, 08:59 AM   #7
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well ive added the entire kit, which includes the 2" bump stops. so does that mean that i can get 33" and use them on/offroad safely? what about with swaybars disconnected?

and boogieman, are you sure that is a 2" lift with 33"? doesnt look like it.
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Unread 08-06-2010, 09:01 AM   #8
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Quote:
Originally Posted by Tmblack3 View Post
well ive added the entire kit, which includes the 2" bump stops.

and boogieman, are you sure that is a 2" lift with 33"? doesnt look like it.
Yes,it looks like less because of the way it's parked.
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Unread 08-06-2010, 09:04 AM   #9
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I'm running a 2" BB on 32's...no issues though I wouldn't recommend going any bigger with that set-up. If you want bigger tires just wait and save your $$$ for a real lift-kit. Just my 2cents...
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Unread 08-06-2010, 09:05 AM   #10
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ok, looks like theres only an inch of clearance on front tire
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Unread 08-06-2010, 09:21 AM   #11
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In my opinion go with a smaller tire such as a 31 or no more than a 32 and take the trade off of a smaller tire for better articulation. Unless your offroading is mainly mudding, then I would stuff a 33 or whatever the biggest you can fit in there, because in mud tire size matters and articualtion doesnt so much.
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Unread 08-06-2010, 10:09 AM   #12
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Guess no more.

http://www.jeepforum.com/forum/f59/l...-tires-926289/
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Unread 08-06-2010, 10:28 AM   #13
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I swear I've seen some folks around the beaches near Los Angeles running what looks like 32 or 33" tires (and probably a foot wide) on an otherwise stock TJ. I guess it works if the jeep stays on the road all the time.
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Unread 08-06-2010, 10:32 AM   #14
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Originally Posted by danielbuck View Post
I swear I've seen some folks around the beaches near Los Angeles running what looks like 32 or 33" tires (and probably a foot wide) on an otherwise stock TJ. I guess it works if the jeep stays on the road all the time.
Well, now ask yourself where you didn't see them.
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Unread 08-06-2010, 10:48 AM   #15
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Originally Posted by Sundowner View Post
Well, now ask yourself where you didn't see them.
I've seen 32's with just 1" spacers up front and they're fine.The rear clears good.Stock rubi's have 31's so a 1" lift with 32's is the same thing.Here's 33's and stock suspension.
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